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40V, Synchronous, 4-Switch, Bi-direction Buck-Boost Controller - AN6581

The AN6581 is a synchronous four-switch bi-direction buck-boost DC/DC controller capable of regulating the VBUS/VBAT voltage at, above, or below the VBAT/VBUS voltage. The AN6581 operates over a wide input voltage range of 3V to 40V to support a variety of applications. The AN6581 employs current-mode control both in buck and boost modes of operation for superior load and line regulation. The switching frequency is programmed by an external resistor. This device also features a programmable soft-start function and offers protection features including cycle-by-cycle current limiting, input undervoltage lockout (UVLO), output overvoltage protection (OVP), and thermal shutdown. The AN6581 is available in an QFN4x4-32L package, provides a very compact system solution and good thermal conductance.

AN6581

Rectified Type

SYNC

Vin(Min)[V]

3

Vin(Max)[V]

42

Vout(Min)[V]

0.8

Vout(Max)[V]

42

Current[A]

20

Freq(Min)[MHz]

0.1

Freq(Max)[MHz]

1

Freq(Typ)[MHz]

Efficiency[%]

95

Package Type

QFN-32
Remark
Ext Comp/ADJ

特色功能

  • Single Inductor Buck-Boost Controller for Step-Up/Step-Down DC/DC Conversion
  • Bi-direction operation for charging and discharging
  • Wide Input Voltage from 3V to 40V
  • High Efficiency
  • USB-PD Type-C Support
  • Adjustable Switching Frequency
  • Programmable External Soft-Start
  • Auto Recovery after Faults
  • VBUS Cord Voltage Drop Compensation
  • Programmable Over Current Setting
  • Power Good and Output Overvoltage Protection
  • Over-Temperature Protection
  • Thermal Enhanced QFN4x4-32L Package
  • RoHS Compliant

應用範圍

  • Car Charger
  • CC/CV regulation converter
  • Rechargeable Portable Devices
  • USB Power Delivery
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